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单词
pseudoperfect number
释义
pseudoperfect number
[¦süd·ō´pǝr·fikt `nǝm·bǝr]
MATHEMATICS
An integer that is equal to the sum of some of its proper divisors.
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rd
RdAc
RDC extractor
RDF
RDGE
R display
RDS
RDSS
RdTh
RDX
Re
reach
reach rod
reactance
reactance amplifier
reactance drop
reactance frequency multiplier
reactance grounded
reactance relay
reactance tube
reactance-tube modulator
reactant
reactant ratio
reaction
reaction border
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更新时间:2026/1/21 3:21:29